Which two changes should the systems engineer propose to meet the customer requirements?

A customer needs to increase availability in their Nutanix environment by enabling rack awareness. The current configuration consists of: 1 RF2 cluster consisting of 7 identical NX-3170 1U nodes, All Storage efficiencies are disabled.

Which two changes should the systems engineer propose to meet the customer requirements? (Choose two)
A . Add 1 additinal NX-3170 1U node.
B . Add 2 additional NX-3170 1U nodes.
C . Distribute nodes across 2 separate racks.
D . Distribute nodes across 3 separate racks.

Answer: B,D